Is there a way to mirror my smartphone/tablet notifications on an external display (like an e-ink display or something)? During focused work sessions, I lock away my smartphone but that also prevents me from being notified of important emails, especially when I don't have my laptop with me.

I'm logged into work email (and related sites) on a desktop (laptop) browser. So when I keep phone away I still get desktop notifications.

Yeah. I have that too. But I still need notifications when I don't have my laptop around 😭

I think iPhone's focus modes address this problem to some extent.

If you are using android , you need to have adb installates on your phone , after that you can do with Side mirror or AirDroid

Not screen mirroring @faint-energy-11966 but check out KDE connect maybe?